Design of multimode intelligent control system for traffic signal lights

This paper addresses the issue of urban traffic congestion and the shortcomings of the current traffic signal control system, and combines the current research hotspots in intelligent traffic control systems. It proposes a multi-mode control scheme for traffic signals. Based on the previous theoretical research, this paper designs the system using PLC as the controller. Simulation results have verified that the multi-mode intelligent traffic control system designed in this paper can meet the expected requirements. Due to the high reliability and good flexibility of PLC, this system not only has a low failure rate but also can be upgraded according to different needs as science and technology develop. In addition, the control of traffic signal lights can be used as a case in student-centered (OBE) teaching activities. The difficulty of the requirements for traffic signal light control can be gradually increased, achieving the goal of cultivating students in a hierarchical manner. Therefore, the design of this system not only has practical application value but also has theoretical research significance.